安装RabbitMQ，创建消息队列用户时报错怎么办？？？

Posted 2021-09-12 龙少。

安装RabbitMQ，创建消息队列用户时报错怎么办

• 一.具体报错信息
• 二.背景介绍
• 三.解决办法

一.具体报错信息

Error: unable to connect to node rabbit@localhost: nodedown

二.背景介绍

在openstack-T版环境部署的时候，在安装RabbitMQ后，在创建消息队列用户,用于controler和 计算节点连接rabbitmq的认证（关联）时报错

[root@ct ~]# rabbitmqctl add_user openstack RABBIT_PASS
Error: unable to connect to node rabbit@localhost: nodedown

[root@ct ~]# systemctl enable rabbitmq-server.service
[root@ct ~]# systemctl start rabbitmq-server.service
[root@ct ~]# rabbitmqctl add_user openstack RABBIT_PASS
Error: unable to connect to node rabbit@localhost: nodedown

DIAGNOSTICS
===========

attempted to contact: [rabbit@localhost]

rabbit@localhost:
  * connected to epmd (port 4369) on localhost
  * epmd reports node 'rabbit' running on port 25672
  * TCP connection succeeded but Erlang distribution failed

  * Hostname mismatch: node "rabbit@ct" believes its host is different. Please ensure that hostnames resolve the same way locally and on "rabbit@ct"


current node details:
- node name: 'rabbitmq-cli-78@ct'
- home dir: /var/lib/rabbitmq
- cookie hash: sFo8yhXAlgTvkHNQ0wCYbQ==

三.解决办法

杀死mq进程，重启服务

[root@ct ~]# ps -ef | grep rabbitmq | grep -v grep | awk '{print $2}' | xargs kill -9
[root@ct ~]# rabbitmq-server -detached
Warning: PID file not written; -detached was passed.
[root@ct ~]# rabbitmqctl status

重新创建成功